Knitting-machine



J. P. DELAHANTY, OF COHOES, NEWv YORK, ASSIGNOR TO HIMSELF AND E. S. ELLS; E. S.

ELLS ASSIGNOR TO CLARK TOMPKINS, OF TROY, NEW YORK.

KNITTING-MAGI-IINE.

Specification of Letters Patent No. 271,045, dated July 27, 1858.

T0 all 'whom t may concern.'

Be it known that I, JOSEPH I). DELA- HANTY, of the village of Cohoes, in the county of Albany and State of New York, have invented a new and improved inode of preventing the casting oli of the quarter or web when the yarn breaks or runs out in rotary knitting -machines having springbarbed needles operated by a presser; and I do hereby declare that the following is a full and exact description thereof, reference being had to the annexed drawings, making a p/Iirt of this specification.

y improved mode of preventing the running oil of the quarter or web when the yarn breaks or runs out in rotary knitting machines having the common spring-barbed needles operated by a presser can be distinguished from every other method of producing a like result in such machines, by the fact that in my mode the presser is so arranged oradjusted and connected with the yarn as it runs to the needles that when the yarn breaks or runs out the presser will then so move, or be moved, as to cease depressing the barbs of the needles.

I will now so describe the manner of carrying the principle of my invention into elect, that others skilled in making and using such knitting machines will be able to apply my improvement to all the varieties.

In the annexed drawings Figure 1 is an elevation of a plain cylinder of common spring-barbed needles, provided with a common sinker wheel, and having a presser which is arranged or adjusted in respect to the barbs of the needles and connected to or with the yarn running thereto in accordance with the principle of myinvention; and Fig. 2 is a plan of the same.

The same letters refer to like parts in both iiguresg. and the arrows indicate the directions in which the parts move.

A is the needle cylinder,

B is the series of common spring-barbed needles.

C is the common sinker wheel.

D is the yarn, shown in red lines.

E is a presser, fast on a spindle or rod, a,

which is fitted to slide in a case, o, of the stock G; and is provided with a spring, c, which, when not overcome, throws the spindle, a, upward.

Z is a stop-pinto limit the upward motion of the presser. In a side of the spindle b is a projecting pin, e, which slides closely in a slot f in the case Z) so as to keep the presser from turning sidewise.

g is a lever, pivoted to the stock G at 7L, and having a catch z, at the end of its short arm, which holds the pin c and thereby the presser E in its proper position, (shown in full lines in Fig. 1,) for depressing the barbs of the needles ,-the long arm of the lever g being at such times held by the catch j on the short arm of the lever la which is hung at Z to the stock Gr. A drop-wire, m, is hung at n to the stock G. In knitting, when the yarn is running to the needles properly, this wire m is supported by the yarn where the latter passes over or through the support 0,' and at such times the wire m is just above the long part of the lever 7c; but whenever the yarn breaks or runs out the wire m falls upon the long arm of the lever 7c and thereby liberates the lever g which frees the spindle and lets the compressed spring c throw the presser above the needles so that no more stitches can be cast off.

The positions which the presser, E, catchlevers, g, la, and drop-wire, m, occupy when the yarn is running to the needles properly in knitting are shown in full lines in the drawings; but when the yarn breaks or fails those parts fly into the positions shown by the dotted lines in Fig. 1. The distance from the place where the yarn enters the needles to the place where the wire m bears against the yarn, should of course be such that whenever the yarn breaks or runs out, the presser will move away from the barbs of the needles just before the end of the yarn arrives at the presser.

The presser may be a llXed one as shown in the drawings, or a rotary one, as is often used; and be supported by a movable arm or any other suliicient device, and move, or be moved, whenever the yarn breaks or runs out, by a spring, weight, or any other suitable power, in any direction away from the barbs of the needles, without departing from the principle which distinguishes my mode of saving the quarter from all others. And, instead of the.device shown in the drawings 'for connecting the presser with the yarn as it runs to the needles, any suitable mechanical contrivance, which, when the yarn breaks or fails, will then cause the presser to so move as to cease depressing the barbs of the Vneedles, may be employed to connect the presser with the running yarn Without departing from the principle of my improvement. And it Will also be observed that my improvement is generally applicable to rotary knitting machines Which have the common spring-barbed needles operated by a presser; Whether made for knitting plain, or ribbed Work, or Whether the needles are arranged in a cylindrical, or in a diverging, or converging, annular, series, or in converging, or radiating, discoidal sets, or Whether the needles are iiXed, or slide endwise; or Whether the set, or sets, of needles revolve, (as in the draWings,) or are stationary While the yarn, Carrier, or sinker, and presser revolve; or Whether the yarn is fed to the needles by a sinker-Wheel, or any of the other devices commonly employed therefor; or

Whether a stitch-Wheel, cam, Webguide, or other device commonly or occasionally employed to cast oit' the stitches is used.

What I claim as my improvement in rotary knitting machines having spring-barbed needles operated by a presser and desire to secure by Letters Patent is- So arranging or adjusting the presser and connecting it With the yarn running to the needles, that when the yarn breaks or fails the presser Will move and cease depressing the barbs of the needles and thereby prevent the casting off of the quarter or web,

substantially as herein set forth.

JOSEPH l). DELAHANTY.

Vitnesses:

MARCUS BALL, AUSTIN F. PARK. 

